code: def tearDown(self):
      super().tearDown()
  
      # removes Derby from last runs
      if os.path.isdir(HIVE_METASTORE):
          shutil.rmtree(HIVE_METASTORE)
  
file_path: ReAgent/reagent/test/workflow/reagent_sql_test_base.py
imports: import logging
  import os
  import random
  import shutil
  import numpy
  import torch
  from pyspark import SparkConf
  from reagent.data.spark_utils import DEFAULT_SPARK_CONFIG
  from sparktestingbase.sqltestcase import SQLTestCase
label_desc: Use image node_id 7 for calling the ReagentSQLTestBase obj's underlying member method code with example usage: obj.tearDown() without return types